Green Toys Blocks are the world's most environmentally friendly basic building set... and now it's better than ever! The Block set by Green Toys has 18 boldly colored, lightweight blocks which have been re-engineered for easier grip and better stacking action. This unique block set includes a variety of shapes for building castles, towers, or any imaginative structure budding architects can dream up. Plenty of Good Green Fun. Color combinations may vary. Dimensions: Single Block: 2-3/4" L x 2-3/4" W x 2-1/4" H. Made in the USA from 100% recycled plastic.